This is a presentation of LISP which is both practical and theoretical. For the practical, the syntax of the language, the programming styles, and the semantics of computation are carefully developed. For the theoretical, the algebra of interpreters, the lambda calculus as a foundation for LISP, and the algebraic significance of LISP’s approach to artificial intelligence are discussed. As the title suggests, the book reaches beyond the technical side of LISP to present applications, historical comments and quotations, computational philosophy, and consequences of LISP’s power.